.zrhq-calculator {
  --zrhq-bg: #0F1115;
  --zrhq-surface: #171B21;
  --zrhq-surface-2: #1E242C;
  --zrhq-heading: #F4F6F8;
  --zrhq-text: #C7CCD4;
  --zrhq-muted: #8F98A3;
  --zrhq-border: #303640;
  --zrhq-red: #E53935;
  --zrhq-dark-red: #9D0F0F;
  --zrhq-orange: #E86A17;

  width: 100%;
  color: var(--zrhq-text);
  font-family: Inter, Arial, sans-serif;
}

.zrhq-calculator * {
  box-sizing: border-box;
}

.zrhq-calc-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, .85fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  overflow: hidden;
  padding: clamp(38px, 5vw, 64px);
  border: 1px solid rgba(255,255,255,.09);
  background:
    radial-gradient(circle at 88% 50%, rgba(229,57,53,.11), transparent 30%),
    linear-gradient(135deg, rgba(30,36,44,.92), rgba(15,17,21,.98) 58%);
}

.zrhq-calc-shell::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: linear-gradient(var(--zrhq-red), var(--zrhq-dark-red));
  box-shadow: 0 0 14px rgba(229,57,53,.35);
}

.zrhq-calc-copy,
.zrhq-calc-preview {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.zrhq-calc-kicker {
  margin-bottom: 8px;
  color: var(--zrhq-red);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.zrhq-calc-copy h2,
.zrhq-calc-dialog h3 {
  margin: 0;
  color: var(--zrhq-heading);
  font-family: "Barlow Condensed", Impact, "Arial Narrow", sans-serif;
  font-weight: 700;
  text-transform: uppercase;
}

.zrhq-calc-copy h2 {
  font-size: clamp(36px, 4.4vw, 62px);
  line-height: .95;
}

.zrhq-calc-copy > p {
  max-width: 680px;
  margin: 18px 0 26px;
  color: var(--zrhq-muted);
  font-size: 16px;
  line-height: 1.65;
}

.zrhq-calc-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 14px;
  align-items: end;
}

.zrhq-calc-fields label {
  display: block;
  min-width: 0;
}

.zrhq-calc-fields label > span {
  display: block;
  margin-bottom: 8px;
  color: var(--zrhq-heading);
  font-size: 13px;
  font-weight: 700;
}

.zrhq-calc-fields select {
  width: 100%;
  min-height: 48px;
  padding: 0 38px 0 14px;
  border: 1px solid var(--zrhq-border);
  border-radius: 3px;
  background-color: #0B0E12;
  color: var(--zrhq-heading);
  font: inherit;
  font-size: 16px;
  cursor: pointer;
}

.zrhq-calc-fields select:focus {
  outline: 2px solid rgba(229,57,53,.35);
  outline-offset: 2px;
  border-color: var(--zrhq-red);
}

.zrhq-calc-arrow {
  padding-bottom: 13px;
  color: var(--zrhq-muted);
  font-size: 22px;
}

.zrhq-calc-button {
  min-height: 48px;
  margin-top: 16px;
  padding: 0 24px;
  border: 1px solid #ff4545;
  border-radius: 3px;
  background: linear-gradient(180deg, #c91515 0%, #9d0f0f 55%, #6f0909 100%);
  color: #fff;
  font-family: "Barlow Condensed", Impact, sans-serif;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.14),
    0 0 8px rgba(229,57,53,.35),
    0 4px 12px rgba(0,0,0,.45);
  transition: transform .18s ease, filter .18s ease, box-shadow .18s ease;
}

.zrhq-calc-button:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.18),
    0 0 13px rgba(229,57,53,.55),
    0 6px 14px rgba(0,0,0,.5);
}

.zrhq-calc-button:focus-visible,
.zrhq-calc-close:focus-visible,
.zrhq-result-footer a:focus-visible,
.zrhq-result-details summary:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.zrhq-calc-error {
  min-height: 20px;
  margin: 10px 0 0;
  color: #ff7a7a;
  font-size: 13px;
}

.zrhq-calc-preview {
  min-height: 260px;
  display: grid;
  align-content: center;
  justify-items: center;
  padding: 34px;
  border: 1px solid rgba(255,255,255,.08);
  background:
    linear-gradient(rgba(229,57,53,.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229,57,53,.07) 1px, transparent 1px),
    #0B0E12;
  background-size: 28px 28px;
  text-align: center;
}

.zrhq-calc-preview::after {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid rgba(255,255,255,.04);
  pointer-events: none;
}

.zrhq-calc-preview-label,
.zrhq-calc-preview-note {
  color: var(--zrhq-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.zrhq-calc-preview-levels {
  display: flex;
  align-items: center;
  gap: 18px;
  margin: 10px 0;
  font-family: "Barlow Condensed", Impact, sans-serif;
  font-size: clamp(44px, 6vw, 82px);
  line-height: 1;
  color: var(--zrhq-heading);
}

.zrhq-calc-preview-levels strong:last-child {
  color: var(--zrhq-red);
}

.zrhq-calc-preview-levels span {
  color: var(--zrhq-muted);
  font-size: .55em;
}

.zrhq-calc-source-note {
  grid-column: 1 / -1;
  margin: 4px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.06);
  color: var(--zrhq-muted);
  font-size: 11px;
  line-height: 1.5;
}

.zrhq-calc-modal[hidden] {
  display: none !important;
}

.zrhq-calc-modal {
  position: fixed;
  inset: 0;
  z-index: 999999;
  display: grid;
  place-items: center;
  padding: 18px;
}

.zrhq-calc-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4,6,8,.82);
  backdrop-filter: blur(5px);
}

.zrhq-calc-dialog {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  max-height: calc(100dvh - 36px);
  overflow: auto;
  padding: clamp(24px, 4vw, 38px);
  border: 1px solid rgba(255,255,255,.12);
  background:
    radial-gradient(circle at 100% 0, rgba(229,57,53,.12), transparent 26%),
    #101318;
  color: var(--zrhq-text);
  box-shadow: 0 24px 70px rgba(0,0,0,.65);
}

.zrhq-calc-dialog::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--zrhq-red);
}

.zrhq-calc-close {
  position: absolute;
  top: 12px;
  right: 14px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--zrhq-border);
  border-radius: 2px;
  background: #0B0E12;
  color: var(--zrhq-heading);
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
}

.zrhq-result-title {
  padding-right: 52px;
  font-size: clamp(32px, 5vw, 50px);
  line-height: 1;
}

.zrhq-result-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 26px;
}

.zrhq-result-stats > div {
  min-width: 0;
  padding-left: 12px;
  border-left: 2px solid var(--zrhq-border);
}

.zrhq-result-stats span {
  display: block;
  margin-bottom: 4px;
  color: var(--zrhq-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.zrhq-result-stats strong {
  display: block;
  overflow-wrap: anywhere;
  color: var(--zrhq-heading);
  font-size: 20px;
}

.zrhq-result-divider {
  height: 2px;
  margin: 26px 0;
  background: linear-gradient(90deg, transparent, #7a0d0d, var(--zrhq-red), #7a0d0d, transparent);
  opacity: .8;
}

.zrhq-result-heading {
  margin-bottom: 10px;
  color: var(--zrhq-muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.zrhq-result-buildings {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.zrhq-result-building {
  padding: 8px 10px;
  border: 1px solid var(--zrhq-border);
  background: rgba(255,255,255,.03);
  color: var(--zrhq-heading);
  font-size: 12px;
}

.zrhq-result-details {
  margin-top: 22px;
  border-top: 1px solid var(--zrhq-border);
  border-bottom: 1px solid var(--zrhq-border);
}

.zrhq-result-details summary {
  padding: 14px 0;
  color: var(--zrhq-heading);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.zrhq-result-breakdown {
  padding-bottom: 14px;
}

.zrhq-breakdown-row {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 10px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  font-size: 12px;
}

.zrhq-breakdown-row:first-child {
  border-top: 0;
}

.zrhq-breakdown-row strong {
  color: var(--zrhq-heading);
}

.zrhq-breakdown-buildings {
  color: var(--zrhq-muted);
  line-height: 1.45;
}

.zrhq-breakdown-cost {
  color: var(--zrhq-text);
  text-align: right;
  white-space: nowrap;
}

.zrhq-result-footer {
  display: flex;
  gap: 18px;
  justify-content: space-between;
  align-items: center;
  margin-top: 24px;
}

.zrhq-result-footer span {
  color: var(--zrhq-muted);
  font-size: 11px;
}

.zrhq-result-footer a {
  color: var(--zrhq-heading);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  border-bottom: 1px solid var(--zrhq-red);
}

body.zrhq-modal-open {
  overflow: hidden;
}

@media (max-width: 820px) {
  .zrhq-calc-shell {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .zrhq-calc-preview {
    min-height: 190px;
  }

  .zrhq-result-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .zrhq-calc-shell {
    padding: 32px 20px;
  }

  .zrhq-calc-fields {
    grid-template-columns: 1fr;
  }

  .zrhq-calc-arrow {
    display: none;
  }

  .zrhq-calc-button {
    width: 100%;
  }

  .zrhq-calc-preview {
    display: none;
  }

  .zrhq-result-stats {
    gap: 18px 10px;
  }

  .zrhq-breakdown-row {
    grid-template-columns: 50px 1fr;
  }

  .zrhq-breakdown-cost {
    grid-column: 2;
    text-align: left;
    white-space: normal;
  }

  .zrhq-result-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .zrhq-calc-button {
    transition: none;
  }
}